When i set 600 nemo privileged to the dconf/user folder then it works perfect.

If I understand right you mean when you close RootFileCase the dconf folder disappear from /run/user/100000 ? No i check it the folder is still there, i mean with this i need to change again the 600 nemo privileged to run it again as root

Yes you can make a test rpm, if you like you can send it to me via email ? just let me know

I think it have some timeout for changing... Try Open -> use -> close -> wait 2-3 seconds -> Open again -> use. Tell me if work...
The second test that you can do is without checking, just always changing to 600:
1. Restore .desktop file like was before:Exec=/usr/share/openrepos-filecaseroot/start-filecaseroot

I have also try the changes you write here but it dont work as good as with the checker.sh then it works the best, when i do the changes it works one time then not anymore even after wait for 2-3 seconds.

I think it would be great to make a rpm also for the X with this checker.sh in it as i use now, what you think ? Then more people have the solution to run it on there X ;)

PS: The same problem is with the StartAsRoot for File-browser that also dont work on the X, it hink it's the same problem...

Ok.. you say it work with checker.sh and break 2-3 sec before opening it again ? I also can add "sleep 2" at the begining of script instead to wait....
Do you know more people that have the same problem with Sailfish X or maybe it localy on your device ?
Do you know how to check what this device C, 1, Tablet, Aqua or Sony ? If no, show me this command output (don't know another way):grep 'product.device' /opt/alien/system/build.prop|head -1|cut -d '=' -f2
andgrep ID /etc/hw-release|head -1|cut -d= -f2|sed 's/[[:punct:]]//g'
andgrep NAME /etc/hw-release|head -1|cut -d= -f2|sed 's/[[:punct:]]//g'

P.S. Can you do one test please...
Objectifnul wrote on FileBrowser root that he got it working (also all other) by setting pass for root user (by installing sudo).
I'm ask you not install sudo, but just go to terminal -> devel-su + your pass -> passwd root + follow what it ask. Now reinstall my package to get it like was before modifications and try again Open -> try edit -> close -> and the same again.
Thanks.

P.S. Can you do one test please...
Objectifnul wrote on FileBrowser root that he got it working (also all other) by setting pass for root user (by installing sudo).
I'm ask you not install sudo, but just go to terminal -> devel-su + your pass -> passwd root + follow what it ask. Now reinstall my package to get it like was before modifications and try again Open -> try edit -> close -> and the same again.

Ok i have done this, it works also but need to wait for 2-3 sec. before open it again when i close it.

Not 100% sure yet, but apparently Filebrowser 'StartAsRoot' has root privileges only when terminal is open with devel-su. Anyway the behaviour of Filebrowser 'StartAsRoot' appears to be variable: sometimes with, sometimes without root privileges. I don't have the skills to investigate further. (Note: this is with Xperia/SailfishX. No issue with Jolla One)

Actually the issue is not related with terminal. Probably a matter of delays and/or conflicting background actions being performed by the filesystem. For example, at this moment cargodock has root privileges while filebrowser hasn't. Weird.

--EDIT-- Obviously, the SailfishX file system is not btrfs, with little technical information available, and its behaviour is far from predictable. Currently, filebrowser, cargodock, filetug and filecase in 'startasroot' mode have a completely erratic behaviour with about 30% of occurrences with root privilege successfully granted.

Thx for trying. I think there is nothing you can do on your side, this appears to be a SailfishX issue so it's up to Jolla to address it (probably if and when they implement BTRFS like in Jolla One). In the mean time, what I do is this:

(1) open CargoDock in root mode, which will most probably fail (black background, not red).

(2) close it and wait for about one minute.

(3) open it again, check if the screen background is red.

(4) if yes, you are likely to launch other 'rootable' file managers (filebrowser, filetug, filecase) successfully.